Imperfect a. : Not perfect; not complete in all its parts; wanting a part; deective; deficient.

Imperfect a. : Wanting in some elementary organ that is essential to successful or normal activity.

Imperfect a. : Not fulfilling its design; not realizing an ideal; not conformed to a standard or rule; not satisfying the taste or conscience; esthetically or morally defective.

Imperfect n. : The imperfect tense; or the form of a verb denoting the imperfect tense.

Imperfect v. t. : To make imperfect.

Example:
Economics What is “Imperfect competition” and what forms can it take? Should antitrust laws try to elimina?

Taxonomy
imperfect tense, imperfect, tense, verbs, conjugation, vowel, kâr, imperfect tenses, sentence, suffix, yor, indicative, siz, Romance languages, continuous tense, English equivalent, free encyclopedia, uncompleted.

Defination from the web:
imperfect tense, in the classical grammar of several Indo-European languages, denotes a past tense with an imperfective aspect. ... the imperfect tense is used. For example, the sentence "Someone ate all of my cookies." (when translated) is not a good candidate for the imperfect. ...